Bridgestone Blizzak WS80 Winter Radial Tire - 215/45R17 91T MIGHTY MOLECULES - A new Hydrophilic Coating reacts to the elements for confident stopping power on snow and ice Advanced Multicellular Compound with Nano Pro-Tech works at a molecular level to remain pliable in cold OPTIMIZED CONSTRUCTION - New Cavity Shape distributes contact pressure uniformly across the entire footprint area for even wear and dry, ice and snow performance SERIOUS TREAD - Bite particles act like microscopic studs providing confident road grip and braking on ice 3D Zigzag Sipes create biting edges without sacrificing block stiffness Increased block edges by 20% (compared to WS70) for better handling on snow and slush